Regular expression with minus sign

[Doan_Ha]

Hi,

I have a string for example: "*(-25)-7+3". I want to seperate all the numbers and math operators into 2 arrays. For the number, I use [-]?[.]?[0-9]+[.]?[0-9]* and it works fine. However, if I use [+-*/] as a second expression, the software will take all the operator signs include the one inside the parentheses (which I don't want). How can I get rid of the minus sign in front of a number inside parentheses? For example, in this case, I would like to get *-+ instead of *--+. Any help is hightly aprreciated.

[sklod]

Could you post your VI?

[ben64 · Accepted solution]

The following regex will match a minus sign that is not preceeded by an opening parenthesis or a plus sign. You need to use Match Regular Expression not Match Pattern (Match Pattern has limited regex capability).

(?<!\()-|\+

Ben64